dcfprogs/Graphics/Rotate/Title

Home » Personal collection » Acorn hard disk » misc » misc2 » dcfprogs/Graphics/Rotate/Title

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk:	Home » Personal collection » Acorn hard disk » misc » misc2
Filename:	dcfprogs/Graphics/Rotate/Title
Read OK:	✔
File size:	04C3 bytes
Load address:	0000
Exec address:	0000

Duplicates

There is 1 duplicate copy of this file in the archive:

Personal collection » Acorn ADFS disks » Electron » Programs_B.ADF » Graphics/Rotate/Title
Personal collection » Acorn hard disk » misc » misc2 » dcfprogs/Graphics/Rotate/Title

File contents

   10 REM         Rotating EUG                          by  Dominic Ford
   20 :
   30 ON ERROR GOTO 90
   40 MODE4:VDU23,1,0;0;0;0;:HIMEM=&2600:PROCass:brk=FALSE:*LO. TitleDat
   50 PRINTTAB(16,28)"Issue 30"TAB(13,30)"Press  <SPACE>";:?&80=0:?&81=7:?&82=0:?&83=7:?&84=0:?&85=0:?&86=1:?&87=1
   60 REPEAT:T=TIME:CALLcopy
   70 REPEAT UNTIL TIME>T+10:IF INKEY(-99) THEN brk=TRUE
   80 UNTIL brk
   90 END
  100 :
  110 DEFPROCass
  120 FORpass=0TO2STEP2:P%=&2600
  130 [OPTpass
  140.copy INC&80:LDA&80:CMP#16:BNEnota:LDA&84:EOR#1:STA&84:LDA#0:STA&80
  150.nota INC&81:LDA&81:CMP#16:BNEnotb:LDA&85:EOR#1:STA&85:LDA#0:STA&81
  160.notb INC&82:LDA&82:CMP#16:BNEnotc:LDA&86:EOR#1:STA&86:LDA#0:STA&82
  170.notc INC&83:LDA&83:CMP#16:BNEnotd:LDA&87:EOR#1:STA&87:LDA#0:STA&83
  180.notd LDX#4:.coploop LDA&83,X:BNEbackward:LDA&7F,X:JMPforward:.backward LDA#15:SEC:SBC&7F,X:.forward TAY:JSRperform:DEX:BNEcoploop:RTS
  190.perform LDA#&C0:STA&70:LDA#&5A:STA&71:STX&78:.toloop CPX#0:BEQfirst:LDA&71:CLC:ADC#5:STA&71:DEX:JMPtoloop:.first LDX&78
  200LDA#0:STA&72:LDA#&28:STA&73:STY&78:.fromloop CPY#0:BEQfromfin:LDA&72:CLC:ADC#&C0:STA&72:LDA&73:ADC#0:STA&73:DEY:JMPfromloop
  210.fromfin LDA#4:STA&79:.start LDY#0:.main LDA(&72),Y:STA(&70),Y:INY:CPY#&C0:BNEmain:LDA&70:CLC:ADC#&40:STA&70:LDA&71:ADC#1:STA&71:LDA&73:CLC:ADC#12:STA&73:DEC&79:BNEstart:RTS
  220]:NEXT:ENDPROC


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2g �16,28)"Issue 30"�13,30)"Press  <SPACE>";:?&80=0:?&81=7:?&82=0:?&83=7:?&84=0:?&85=0:?&86=1:?&87=1
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F  � � �>T+10:� �(-99) � brk=�
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�E.nota INC&81:LDA&81:CMP#16:BNEnotb:LDA&85:�#1:STA&85:LDA#0:STA&81
�E.notb INC&82:LDA&82:CMP#16:BNEnotc:LDA&86:�#1:STA&86:LDA#0:STA&82
�E.notc INC&83:LDA&83:CMP#16:BNEnotd:LDA&87:�#1:STA&87:LDA#0:STA&83
��.notd LDX#4:.coploop LDA&83,X:BNEbackward:LDA&7F,X:JMPforward:.backward LDA#15:SEC:SBC&7F,X:.forward TAY:JSRperform:DEX:BNEcoploop:RTS
�|.perform LDA#&C0:STA&70:LDA#&5A:STA&71:STX&78:.toloop CPX#0:BEQfirst:LDA&71:CLC:ADC#5:STA&71:DEX:JMPtoloop:.first LDX&78
�LDA#0:STA&72:LDA#&28:STA&73:STY&78:.fromloop CPY#0:BEQfromfin:LDA&72:CLC:ADC#&C0:STA&72:LDA&73:ADC#0:STA&73:DEY:JMPfromloop
ұ.fromfin LDA#4:STA&79:.start LDY#0:.main LDA(&72),Y:STA(&70),Y:INY:CPY#&C0:BNEmain:LDA&70:CLC:ADC#&40:STA&70:LDA&71:ADC#1:STA&71:LDA&73:CLC:ADC#12:STA&73:DEC&79:BNEstart:RTS
�	]:�:�
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000004c0  e1 0d ff                                          |...|
000004c3

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